| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 96.90 | 96.53 | 83.03 | 60.50 | 60.16 | 79.43 | g | |||||
| 1945 | 57.52 | 62.18 | 61.10 | 75.87 | 75.84 | 88.87 | 101.90 | 97.10 | 94.97 | 81.29 | 58.80 | 54.35 | 75.81 | |||||||||||||
| 1946 | 57.71 | 55.61 | 63.87 | 75.77 | 83.10 | 86.70 | 97.13 | 99.03 | 90.07 | 75.16 | 61.31 | a | 56.68 | 75.18 | ||||||||||||
| 1947 | 58.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.03 | k | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1949 | ----- | z | ----- | z | 58.74 | 79.53 | 83.16 | 95.50 | 98.52 | 92.48 | 90.73 | 77.97 | 71.73 | 54.68 | 80.30 | b | ||||||||||
| 1950 | 43.70 | a | 60.18 | 63.87 | 76.53 | 86.94 | 91.53 | 102.03 | 100.55 | 90.30 | 74.48 | 66.77 | 55.97 | 76.07 | ||||||||||||
| 1951 | 51.71 | 58.04 | 67.17 | a | 77.37 | 82.10 | 95.10 | 99.03 | 97.55 | 93.97 | 76.29 | 62.00 | 54.03 | 76.20 | ||||||||||||
| 1952 | 48.29 | 59.59 | 62.16 | 77.03 | 84.16 | 85.37 | 101.13 | 97.45 | 95.00 | 86.35 | 66.73 | 51.68 | 76.25 | |||||||||||||
| 1953 | 58.10 | 66.00 | 66.81 | 73.68 | b | 73.20 | a | 83.66 | a | 100.10 | a | 93.14 | c | 95.30 | 79.17 | a | 62.33 | 61.13 | a | 76.05 | ||||||
| 1954 | 54.48 | 66.32 | 63.32 | 77.07 | 86.63 | a | 87.20 | 98.50 | a | 90.80 | a | 88.07 | 78.81 | 64.40 | 53.58 | 75.77 | ||||||||||
| 1955 | 54.74 | 60.64 | 68.26 | 67.41 | a | 86.48 | b | 92.03 | a | 95.90 | a | 99.71 | 92.97 | 82.39 | 63.10 | 54.24 | b | 76.49 | ||||||||
| 1956 | 53.26 | 58.52 | 68.90 | 73.73 | 81.90 | 91.28 | a | 99.93 | c | 96.33 | a | 91.14 | a | 75.87 | a | 72.37 | 64.52 | 77.31 | ||||||||
| 1957 | 53.84 | 63.52 | a | 64.58 | 75.23 | 80.77 | 94.93 | a | 97.77 | a | 94.30 | a | 90.53 | 71.83 | a | 65.13 | 57.07 | d | 75.79 | |||||||
| 1958 | 56.71 | c | 57.64 | c | 59.90 | 71.66 | a | 83.71 | 87.30 | 97.13 | a | 99.48 | 91.57 | 82.71 | 66.60 | 65.32 | 76.64 | |||||||||
| 1959 | 57.93 | a | 59.25 | 72.30 | a | 80.43 | 80.35 | 94.87 | 101.23 | 96.06 | 85.67 | 80.63 | a | 72.67 | 61.13 | a | 78.54 | |||||||||
| 1960 | 51.13 | a | 59.54 | a | 67.45 | 71.13 | 77.20 | a | 95.93 | 100.71 | 95.86 | b | 91.70 | 76.42 | 60.33 | 57.71 | 75.43 | |||||||||
| 1961 | 57.61 | 62.11 | 63.32 | 78.13 | 77.83 | a | 97.21 | a | 102.53 | a | 97.35 | 89.50 | 79.77 | 63.48 | a | 55.03 | a | 76.99 | ||||||||
| 1962 | 62.16 | 57.68 | 62.94 | 81.50 | 79.68 | 94.13 | 100.81 | 97.07 | a | 92.87 | 77.58 | 66.23 | 62.03 | 77.89 | ||||||||||||
| 1963 | 58.90 | a | 66.18 | 64.68 | 64.20 | 81.23 | 91.13 | 95.35 | 96.29 | 93.77 | 78.10 | 61.87 | 54.48 | 75.51 | ||||||||||||
| 1964 | 55.81 | 68.97 | 67.39 | 77.24 | a | ----- | z | 88.20 | 100.30 | a | 98.20 | a | 91.17 | 84.90 | 59.97 | 56.13 | 77.12 | a | ||||||||
| 1965 | 58.48 | b | 66.18 | 70.53 | a | 70.33 | 83.74 | 91.23 | 99.66 | b | 94.71 | 88.31 | a | 87.55 | 61.23 | 52.23 | a | 77.02 | ||||||||
| 1966 | 54.94 | 57.57 | 66.19 | 80.83 | 88.61 | 92.83 | 96.68 | 100.77 | 93.33 | 84.97 | a | 63.60 | 55.13 | 77.96 | ||||||||||||
| 1967 | 56.74 | 66.82 | 62.03 | a | 58.93 | 85.42 | 91.83 | 101.61 | 104.29 | 95.00 | 82.10 | 68.67 | 56.84 | 77.52 | ||||||||||||
| 1968 | 54.84 | ----- | z | 68.61 | 77.53 | 83.06 | 95.43 | ----- | z | 92.13 | ----- | z | 79.06 | 60.87 | 49.48 | 73.45 | c | |||||||||
| 1969 | 50.03 | 51.64 | 67.74 | 73.17 | 89.65 | 89.17 | 101.68 | 101.71 | 93.90 | 76.06 | 70.83 | 59.58 | 77.10 | |||||||||||||
| 1970 | 55.03 | 66.68 | 68.81 | 71.50 | 87.81 | 93.83 | 102.13 | 99.32 | 93.17 | 78.83 | a | 62.60 | 51.71 | 77.62 | ||||||||||||
| 1971 | 56.84 | 64.68 | 63.71 | 72.37 | 78.53 | a | 89.50 | 101.29 | 100.23 | a | 92.03 | 78.74 | 63.77 | 51.81 | 76.12 | |||||||||||
| 1972 | 55.45 | 60.93 | 71.42 | 72.20 | 86.16 | 95.47 | 101.10 | 99.84 | 88.80 | 77.03 | a | 60.87 | 47.84 | 76.43 | ||||||||||||
| 1973 | 51.97 | 60.11 | 63.00 | 77.83 | 89.53 | a | ----- | z | 102.74 | 97.19 | 90.47 | 76.84 | 54.53 | 53.58 | 74.35 | a | ||||||||||
| 1974 | 54.52 | 61.25 | 63.84 | 72.17 | 85.32 | 95.38 | a | 97.16 | 98.10 | ----- | z | 81.26 | 64.41 | a | 54.52 | 75.27 | a | |||||||||
| 1975 | 59.84 | 56.86 | 60.84 | 66.90 | a | 85.13 | 92.00 | 97.77 | 95.19 | 97.40 | 74.90 | a | 61.40 | 61.45 | 75.81 | |||||||||||
| 1976 | 62.06 | 59.86 | 67.45 | 69.60 | 88.32 | 91.10 | 99.55 | b | 89.87 | a | 91.23 | 83.19 | 72.60 | 65.32 | 78.35 | |||||||||||
| 1977 | 56.82 | c | 68.71 | 64.52 | 80.00 | 74.33 | a | 97.40 | 99.42 | 98.81 | 85.60 | 78.58 | 64.00 | 56.90 | 77.09 | |||||||||||
| 1978 | 57.23 | 60.29 | 69.29 | 67.77 | 83.90 | ----- | z | 100.52 | 98.81 | 87.07 | 86.65 | 63.97 | 55.71 | 75.56 | a | |||||||||||
| 1979 | 54.84 | 56.96 | 67.45 | 70.20 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.36 | h | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 55.49 | 61.31 | 65.52 | 73.78 | 83.03 | 91.87 | 99.72 | 97.17 | 91.68 | 79.65 | 64.23 | 56.43 | 76.65 | |||||||||||||
| S.D. | 3.74 | 4.19 | 3.37 | 5.13 | 4.36 | 3.63 | 2.05 | 3.16 | 2.98 | 3.84 | 4.29 | 4.34 | 0.93 | |||||||||||||
| SKEW | -0.94 | 0.09 | 0.03 | -0.76 | -0.52 | -0.44 | -0.47 | -0.35 | -0.22 | 0.30 | 0.45 | 0.42 | 0.41 | |||||||||||||
| MAX | 62.16 | 68.97 | 72.30 | 81.50 | 89.65 | 97.40 | 102.74 | 104.29 | 97.40 | 87.55 | 72.67 | 65.32 | 78.54 | |||||||||||||
| MIN | 43.70 | 51.64 | 58.74 | 58.93 | 73.20 | 83.66 | 95.35 | 89.87 | 85.60 | 71.83 | 54.53 | 47.84 | 75.18 | |||||||||||||
| YRS | 33 | 31 | 33 | 33 | 31 | 30 | 31 | 33 | 31 | 33 | 33 | 33 | 26 | |||||||||||||